Integrated Motor Pump Layout With Substrate Cooling and Compact Stator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pump apparatuses have a large footprint due to the side-by-side arrangement of the motor and pump, and there is a growing demand for compact, low-cost, energy-efficient, and stable operation.
Innovation Solution
The motor pump integrates a substrate in the accommodation space of the motor casing, uses a pressed iron core for the stator, and incorporates a bearing with an inclined thrust surface to support the impeller, along with a compact impeller design and efficient heat radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the motor and pump are arranged side by side, then the driving force transmission is simple, but the footprint becomes large
Solution Approach 1:
The motor and pump are merged into a single integrated unit where the motor is positioned at the center and the pump components are arranged radially around it. This consolidation eliminates the need for separate side-by-side arrangement while maintaining simple driving force transmission through the central impeller shaft, thereby reducing the overall footprint.
Solution Approach 2:
The design transitions from a linear side-by-side arrangement to a radial configuration where components are distributed in a circular pattern around the central motor. This dimensional change allows for more efficient space utilization and reduces the axial footprint while preserving the direct driving force transmission path.
2Area of stationary object
If the motor pump is made compact, then the footprint is reduced, but the space for stator coils becomes limited
Solution Approach 1:
The stator coils are arranged radially around the central impeller shaft in a circular configuration rather than linearly. This radial arrangement allows for optimized space utilization, providing sufficient volume for the stator coils within a compact axial footprint by distributing the coil space in a two-dimensional radial plane.
Solution Approach 2:
The stator coils are nested around the central impeller shaft, with the motor components arranged concentrically. This nested configuration allows the stator coils to occupy the annular space efficiently, maximizing the use of available volume while maintaining a compact overall structure.
3Volume of moving object
If the substrate is placed in the accommodation space, then the space utilization is improved, but the heat dissipation becomes challenging
Solution Approach 1:
A heat dissipation member is introduced as an intermediary component between the substrate and the external environment. This heat dissipation member conducts heat away from the substrate located in the accommodation space and transfers it to the surrounding cooling medium, effectively managing thermal conditions while maintaining compact space utilization.
Solution Approach 2:
The heat dissipation function is extracted as a separate dedicated component rather than being integrated into the substrate mounting structure. This allows the substrate to be positioned optimally in the accommodation space for electrical functionality while the separate heat dissipation member handles thermal management independently.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the space required for stator coils, allows for compact design, lowers manufacturing costs, and ensures stable operation by minimizing friction and wear, thereby meeting the demands for compactness and efficiency.
Implementation Method 1
a heat radiation member closing an accommodation space formed in the motor casing
Implementation Method 2
the side plate has a side-plate side welded portion that is ultrasonically welded to the magnet accommodation portion, and the main plate has a main-plate side welded portion that is ultrasonically welded to the side plate
Implementation Method 3
a bearing rotatably supporting the impeller
Data Source
AI summary
The invention is applicable to a motor pump. The motor pump (MP) includes an impeller (1), a pump casing (2), a motor stator (6), a motor casing (3), a heat radiation member (20), and a substrate (50) arranged in an accommodation space (SP).